Hi

Bsc chemistry in which college are you asking about ?

Anyway, speaking in general

Yes, with PCB you are eligible for BSC chemistry.

This is because,
Maths is not mandatory  for bsc chemistry.

For example,
To be eligible for Bsc chemistry in Chandigarh University, Chandigarh, you need to pass 10+2 examination in Science Stream with

• Physics,
• Chemistry
• Mathematics or Biology

with atleast a minimum of 50% marks from anny recognized board.

You can check the same on our page at:- https://www.careers360.com/university/chandigarh-university-chandigarh/bsc-chemistry-hons-course
Or on its official website at:-
https://www.cuchd.in/basic-sciences/bsc-chemistry.php

But yes,

In some of the colleges, it's mandatory to have maths in 12th to be eligible for bsc chemistry .

For example,

To be eligible for Bsc chemistry, it's mandatory to have maths because to be eligible for bsc chemistry in DU you need at least 50 % marks in aggregate of Physics, Chemistry & Maths.

You can check the same at:-
https://university.careers360.com/articles/du-bsc-eligibility-criteria

Thank you